solar titan should be a templar like class, and blast a killer ray of light from his chest, that is not affected by walls or anything. void Hunter, should have have a shadow step ability, where you place yourself in saftey somewhere, and then control a shadow you for a period of time. the shadow hunter cannot take damage, you can only be hurt by your real body being attacked. arc warlock, should be like a emporior from star wars kinda shit where you have massive aoe electric blast from your hands shocking everything in the relitive area